﻿<!DOCTYPE html>
<html>
<head>
  <title>Candlestick or Range Charts</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="GoJS nodes containing simple range charts." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../release/go.js"></script>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">
    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
      var $ = go.GraphObject.make;  // for conciseness in defining templates

      myDiagram =
        $(go.Diagram, "myDiagramDiv");

      // the template for each attribute in a node's array of item data
      var itemTempl =
        $(go.Panel, "TableRow",
          $(go.TextBlock,
            { column: 0 },
            new go.Binding("text")),
          $(go.Shape,
            { column: 1, alignment: go.Spot.Left },
            { fill: "slateblue", stroke: "darkblue" },
            new go.Binding("geometry", "", produceRange)));

      function produceRange(d) {
        var h = 12;  // total height for the markers
        var w = 3;  // half width for the median marker
        // using constructors is more efficient than calling go.GraphObject.make:
        return new go.Geometry()
          .add(new go.PathFigure(d.min, h / 2, false)
            .add(new go.PathSegment(go.PathSegment.Line, d.max, h / 2)))
          .add(new go.PathFigure(d.min, 0, false)
            .add(new go.PathSegment(go.PathSegment.Line, d.min, h)))
          .add(new go.PathFigure(d.max, 0, false)
            .add(new go.PathSegment(go.PathSegment.Line, d.max, h)))
          .add(new go.PathFigure(d.val - w, 0)
            .add(new go.PathSegment(go.PathSegment.Line, d.val + w, 0))
            .add(new go.PathSegment(go.PathSegment.Line, d.val + w, h))
            .add(new go.PathSegment(go.PathSegment.Line, d.val - w, h).close()));
      }

      myDiagram.nodeTemplate =
        $(go.Node, "Auto",
          $(go.Shape,
            { fill: "white" }),
          $(go.Panel, "Table",
            {
              margin: 6,
              itemTemplate: itemTempl
            },
            new go.Binding("itemArray", "items")));

      var nodeDataArray = [
        {
          items: [{ text: "first", min: 10, val: 50, max: 60 },
          { text: "second", min: 20, val: 70, max: 90 },
          { text: "third", min: 40, val: 60, max: 110 },
          { text: "fourth", min: 50, val: 80, max: 130 }]
        }
      ];
      myDiagram.model = $(go.GraphLinksModel,
        {
          copiesArrays: true,
          copiesArrayObjects: true,
          nodeDataArray: nodeDataArray
        });
    }
  </script>
</head>
<body onload="init()">
  <div id="sample">
    <div id="myDiagramDiv" style="background-color: white; border: solid 1px black; width: 100%; height: 500px"></div>
  </div>
  <p>
    For more sophisticated charts within nodes, see the <a href="canvases.html">Canvas Charts</a> sample.
  </p>
</body>
</html>
